Contrails– When enabled, plane contrails are simulated in the sky.
Contrails Number – Determines the number of contrails generated. See the Contrails Number example below. Contrails Strength – Determines the opacity of the contrails. Lower values create less opaque trails, which look older. See the Contrails Strength example below. Contrails Distortion – Determines the amount of distortion in the contrails. See the Contrails Distortion example below. Contrails Offset X (m) – Offsets the contrails by a given value. See the Contrails Offset example below. Contrails Offset Y (m) – Offsets the contrails by a given value. Contrails TimePace (%) – Determines how far the fast airplane contrails progress along the sky. A value of 100% represents an approximate airplane speed of 800km/h. A value of 0% makes the contrails static. Increasing this multiplier value makes contrails appear faster and persist in the sky for a shorter amount of time. See the Contrails Time Pace example below.
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The Dynamic Clouds option has to be enabled to achieve animated contrails.
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Dynamic Clouds – Enables the automatic clouds formation. When enabled, the clouds use unique offset and phase values based on the current time of the day.
Wind Direction (deg) – Specifies the wind direction vector rotation in the horizontal plane. A value of 0 means that the clouds move in the positive X direction. Increasing the wind direction value horizontally rotate this vector clockwise. Wind Speed (m/s) – Specifies the clouds movement speed measured in meters per seconds. Phase Velocity (%/s) – Specifies the phase change measured in percent of the cycle per second. A value of 1 means that the phase loops to its initial state every 100 seconds. Smaller values result in slower changes and a longer phase loop.
